MESON Chess Problem Database

Problem Display
PID: 256972 (3n4/1R5Q/5K2/3k4/3P4/8/2N5/8 w - - 0 1)

Shmatov, Vladimir Afanasievich

Buletin Problemistic, 1994

3n4/1R5Q/5K2/3k4/3P4/8/2N5/8

#2

5 + 2

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qd7#
    • 1...Kd6
      • 2.Qd7#
  • Tries
    • 1.Se3+?
      • 1...Kc6
        • 2.Qc7#
        • 2.Qd7#
      • 1...Kd6
        • 2.Qc7#
        • 2.Qd7#
      • 1...Kxd4!
    • 1.Sb4+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd6
        • 2.Rd7#
        • 2.Qh2#
        • 2.Qc7#
        • 2.Qd7#
        • 2.Qe7#
      • 1...Kxd4!
    • 1.Qf5+?
      • 1...Kc6
        • 2.Qd7#
      • 1...Kd6
        • 2.Qd7#
        • 2.Qc5#
      • 1...Kc4!
    • 1.Qd7+?
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc4!
    • 1.Qe7?
      • 1...Kc6
        • 2.Sb4#
        • 2.Qd7#
      • 1...Sxb7
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sc6
        • 2.Qe6#
      • 1...Sf7
        • 2.Qe6#
      • 1...Kc4!
  • Keys
    • 1.Qh3!
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc6
        • 2.Qd7#
      • 1...Kd6
        • 2.Qd7#
      • 1...Sxb7
        • 2.Qe6#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sf7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAB1(E)
    • K(a);N_GUARD,P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • S(A);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • S(b);N_GUARD,XR(D)::QAB1(E)
        • S(b);N_GUARD::QAB1(E),XS(b)
        • S(b);N_GUARD::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • K(a);N_GUARD,P-FLIGHT::QAR1(E)
      • S(b);N_GUARD,XR(D)::QAB1(E)
      • S(b);N_GUARD::QAB1(E)
      • S(b);N_GUARD::QAB1(E),XS(b)
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